About me

I am the William B. Ransford Professor of Statistics and Computer Science at Columbia University.

I work in machine learning and Bayesian statistics. See my CV and publications.

I work with a great group of students and postdocs.

Machine Learning at Columbia

Columbia has a thriving machine learning community, with many faculty and researchers across departments. The Machine Learning at Columbia mailing list is a good source of information about talks and other events on campus. (To subscribe, send email to machine-learning-columbia+subscribe@googlegroups.com.)

Teaching

In Spring 2026 I am teaching Invariance, Causality, and Applications . It is a PhD-level seminar. See the description for more information.

All my earlier courses are here.

Office hours

Coming to my office hours is much easier than using email to make an appointment.

Sometimes they are canceled. Be sure to check the calendar.